从javascript获取数据后无法从$ _POST获取数据

问题描述：

I am sending data to php from javascript in this format :

var str = $('#description').summernote('code');
    var formData =  $('#form').serialize();
    var formData2=formData+'&data='+encodeURIComponent(str);

           $.ajax({
                            type: 'POST',
                            url: 'test.php',
                            data: formData2,
                            cache: false,
                            success: function (data) {

                            }
                        });

But, I'm unable to get the data in php. I'm using :

$title=$_POST['title'];

to get title but it says that the index is not found and this it is an array and not a string . HOw can I get 'title' data along with many other values?

But ,

$myfile = fopen("test.txt", "a") or die("Unable to open file!");
fwrite($myfile, var_export($_POST, true));
fclose($myfile);

gives me this :

array (
  'title' => 'test title',
  'from_datetime' => '',
 'sno' => ''22,
)

raw format from javascript console:

title=test%20title&from_datetime=&description=br%3E%3C%2Fp%3E%3Cp%3E-----

form:

 <div id="form_div" >
            <form id="form"  method="post" action="javascript:submit_data();" >


                    <div class="col-xs-12 col-sm-12">
                        <input name="title" id="title" placeholder="title" type="text" class="form-control" >

                    </div>

  <div class="col-xs-12 col-sm-12">
                        <input name="desc" id="desc" placeholder="desc" type="text" class="form-control" >

                    </div>

                </div>

答

It seems you do not send the appropriate data through ajax. Try to serialize all the data from your form

var dataSerialized = $('#form').serialize();

$.ajax({
     type: 'POST',
     url: 'test.php',
     data: dataSerialized,
     cache: false,
     success: function (data) {
         console.log('success');
     }
});

Then do a var_dump($_POST); in your test.php file to see if you receive the title field. More about serialize()

The $_POST by definition passes an associative array of variables, so the following formatting is normal.

array (
  'title' => 'test title',
  'from_datetime' => '',
  'sno' => ''22
)

What is not normal is that you do not have the same fields in the array as compared to the html code you show.

答

Is your code checking if the request is a post before running through? The foreach will skip over if there is nothing in $_POST to loop through.

if ($_SERVER['REQUEST_METHOD'] === 'POST') {
    // …
}

从javascript获取数据后无法从$ _POST获取数据

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